266233720 has 32 divisors (see below), whose sum is σ = 599526720. Its totient is φ = 106404480.

The previous prime is 266233711. The next prime is 266233729. The reversal of 266233720 is 27332662.

It is an interprime number because it is at equal distance from previous prime (266233711) and next prime (266233729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266233729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67729 + ... + 71551.

It is an arithmetic number, because the mean of its divisors is an integer number (18735210).

Almost surely, 2^266233720 is an apocalyptic number.

266233720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266233720 is an abundant number, since it is smaller than the sum of its proper divisors (333293000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266233720 is a wasteful number, since it uses less digits than its factorization.

266233720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5575 (or 5571 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 266233720 is about 16316.6700034045. The cubic root of 266233720 is about 643.3110632099.

The spelling of 266233720 in words is "two hundred sixty-six million, two hundred thirty-three thousand, seven hundred twenty".